REDBREAST 27 YEAR 750MLÂ Old Ruby Port Casks is a single pot still Irish whiskey "enriched by" Ruby Port Casks and bottled at a natural cask strength of 53.5% ABV. Redbreast 27 Year Old Ruby Port Casks is a single pot still Irish whiskey "enriched by" Ruby Port Casks and bottled at a natural cask strength of 53.5% ABV.Â
